1 /* Definitions for Intel 386 running FreeBSD with ELF format
2 Copyright (C) 1996, 2000, 2002 Free Software Foundation, Inc.
3 Contributed by Eric Youngdale.
4 Modified for stabs-in-ELF by H.J. Lu.
5 Adapted from GNU/Linux version by John Polstra.
6 Continued development by David O'Brien <obrien@freebsd.org>
8 This file is part of GNU CC.
10 GNU CC is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2, or (at your option)
15 GNU CC is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GNU CC; see the file COPYING. If not, write to
22 the Free Software Foundation, 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
26 #define TARGET_VERSION fprintf (stderr, " (i386 FreeBSD/ELF)");
28 /* Override the default comment-starter of "/". */
29 #undef ASM_COMMENT_START
30 #define ASM_COMMENT_START "#"
33 #define ASM_APP_ON "#APP\n"
36 #define ASM_APP_OFF "#NO_APP\n"
38 #undef DBX_REGISTER_NUMBER
39 #define DBX_REGISTER_NUMBER(n) \
40 (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
42 #undef NO_PROFILE_COUNTERS
43 #define NO_PROFILE_COUNTERS 1
45 /* Tell final.c that we don't need a label passed to mcount. */
48 #define MCOUNT_NAME ".mcount"
50 /* Make gcc agree with <machine/ansi.h>. */
53 #define SIZE_TYPE "unsigned int"
56 #define PTRDIFF_TYPE "int"
58 #undef WCHAR_TYPE_SIZE
59 #define WCHAR_TYPE_SIZE BITS_PER_WORD
61 /* Provide a STARTFILE_SPEC appropriate for FreeBSD. Here we add
62 the magical crtbegin.o file (see crtstuff.c) which provides part
63 of the support for getting C++ file-scope static object constructed
64 before entering `main'. */
67 #define STARTFILE_SPEC \
69 %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
70 %{!p:%{profile:gcrt1.o%s} \
71 %{!profile:crt1.o%s}}}} \
72 crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
74 /* Provide a ENDFILE_SPEC appropriate for FreeBSD. Here we tack on
75 the magical crtend.o file (see crtstuff.c) which provides part of
76 the support for getting C++ file-scope static object constructed
77 before entering `main', followed by a normal "finalizer" file,
81 #define ENDFILE_SPEC \
82 "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
84 /* Provide a LINK_SPEC appropriate for FreeBSD. Here we provide support
85 for the special GCC options -static and -shared, which allow us to
86 link things in one of these three modes by applying the appropriate
87 combinations of options at link-time. We like to support here for
88 as many of the other GNU linker options as possible. But I don't
89 have the time to search for those flags. I am sure how to add
90 support for -soname shared_object_name. H.J.
92 I took out %{v:%{!V:-V}}. It is too much :-(. They can use
95 When the -shared link option is used a final link is not being
100 %{p:%nconsider using `-pg' instead of `-p' with gprof(1)} \
103 %{assert*} %{R*} %{rpath*} %{defsym*} \
104 %{shared:-Bshareable %{h*} %{soname*}} \
107 %{rdynamic:-export-dynamic} \
108 %{!dynamic-linker:-dynamic-linker /usr/libexec/ld-elf.so.1}} \
109 %{static:-Bstatic}} \
110 %{symbolic:-Bsymbolic}"
112 /* A C statement to output to the stdio stream FILE an assembler
113 command to advance the location counter to a multiple of 1<<LOG
114 bytes if it is within MAX_SKIP bytes.
116 This is used to align code labels according to Intel recommendations. */
118 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
119 #undef ASM_OUTPUT_MAX_SKIP_ALIGN
120 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \
122 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
123 else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
127 /* Don't default to pcc-struct-return, we want to retain compatibility with
128 older gcc versions AND pcc-struct-return is nonreentrant.
129 (even though the SVR4 ABI for the i386 says that records and unions are
130 returned in memory). */
132 #undef DEFAULT_PCC_STRUCT_RETURN
133 #define DEFAULT_PCC_STRUCT_RETURN 0
135 /* FreeBSD sets the rounding precision of the FPU to 53 bits. Let the
136 compiler get the contents of <float.h> and std::numeric_limits correct. */
137 #define SUBTARGET_OVERRIDE_OPTIONS \
139 if (!TARGET_64BIT) { \
140 real_format_for_mode[XFmode - QFmode] \
141 = &ieee_extended_intel_96_round_53_format; \
142 real_format_for_mode[TFmode - QFmode] \
143 = &ieee_extended_intel_96_round_53_format; \